{{ $js := .Site.Data.lib.js }}
{{ $css := .Site.Data.lib.css }}

{{ $jquery := resources.Get "js/jquery.min.js" | resources.Fingerprint }}
<script defer src="{{ $jquery.RelPermalink }}"></script>
{{ $enquire := resources.Get "js/enquire.min.js" | resources.Fingerprint }}
<script defer src="{{ $enquire.RelPermalink }}"></script>
{{ $clipboard := resources.Get "js/clipboard.min.js" | resources.Fingerprint }}
<script defer src="{{ $clipboard.RelPermalink }}"></script>
{{ $lazysizes := resources.Get "js/lazysizes.min.js" | resources.Fingerprint }}
<script defer src="{{ $lazysizes.RelPermalink }}"></script>
{{ $zzo := resources.Get "js/zzo.js" | resources.Minify | resources.Fingerprint }}
<script defer src="{{ $zzo.RelPermalink }}"></script>

{{ if $.Param "enablePhotoSwipe" }}
  {{ $photoSwipe := resources.Get "lib/photoswipe/photoswipe.min.js" | resources.Fingerprint }}
  <script defer src="{{ $photoSwipe.RelPermalink }}"></script>
  {{ $photoSwipeUi := resources.Get "lib/photoswipe/photoswipe-ui-default.min.js" | resources.Fingerprint }}
  <script defer src="{{ $photoSwipeUi.RelPermalink }}"></script>
  {{ $photoSwipeStyle := resources.Get "lib/photoswipe/photoswipe.css" | resources.Minify }}
  <link rel="stylesheet" href="{{ $photoSwipeStyle.RelPermalink }}">
  {{ $photoSwipeSkin := resources.Get "lib/photoswipe/custom-skin.css" | resources.Minify }}
  <link rel="stylesheet" href="{{ $photoSwipeSkin.RelPermalink }}">
{{ end }}

{{ if or ($.Param "enableToc") ($.Param "toc") }}
  {{ $toc := resources.Get "js/jquery.toc.min.js" | resources.Fingerprint }}
  <script defer src="{{ $toc.RelPermalink }}"></script>
{{ end }}

{{ if in .Params.Libraries "mermaid" }}
  <script defer src="{{ $js.mermaid.url }}" integrity="{{ $js.mermaid.sri }}" crossorigin="anonymous"></script>
{{ end }}

{{ if in .Params.Libraries "katex" }}
  <link rel="stylesheet" href="{{ $css.katex.url }}" integrity="{{$css.katex.sri }}" crossorigin="anonymous">
  <script defer src="{{ $js.katex.url }}" integrity="{{ $js.katex.sri }}" crossorigin="anonymous"></script>
  <script defer src="{{ $js.katex_auto_render.url }}" integrity="{{ $js.katex_auto_render.sri }}" crossorigin="anonymous"></script>
{{ end }}

{{ if in .Params.Libraries "flowchartjs" }}
  <script defer src="{{ $js.raphael.url }}" integrity="{{ $js.raphael.sri }}" crossorigin="anonymous"></script>
  <script defer src="{{ $js.flowchartjs.url }}" integrity="{{ $js.flowchartjs.sri }}" crossorigin="anonymous"></script>
{{ end }}

{{ if in .Params.Libraries "mathjax" }}
  <script defer src="{{ $js.mathjax.url }}" integrity="{{ $js.mathjax.sri }}" crossorigin="anonymous"></script>
{{ end }}

{{ if in .Params.Libraries "msc" }}
  <script defer src="{{ $js.webfont.url }}"></script>
  <script defer src="{{ $js.snap_svg.url }}"></script>
  <script defer src="{{ $js.lodash.url }}" integrity="{{ $js.lodash.sri }}" crossorigin="anonymous"></script>
  <script defer src="{{ $js.sequence_diagram.url }}" integrity="{{ $js.sequence_diagram.sri }}" crossorigin="anonymous"></script>
  <link rel="stylesheet" href="{{ $css.sequence_diagram.url }}" integrity="{{ $css.sequence_diagram.sri }}" crossorigin="anonymous">
{{ end }}

{{ if in .Params.Libraries "chart" }}
  <script defer src="{{ $js.chart.url }}" integrity="{{ $js.chart.sri }}" crossorigin="anonymous"></script>
{{ end }}

{{ if in .Params.Libraries "wavedrom" }}
<script defer src="{{ $js.wavedrom.url }}" integrity="{{ $js.wavedrom.sri }}" crossorigin="anonymous"></script>
<script defer src="{{ $js.wavedrom_skin.url }}" integrity="{{ $js.wavedrom_skin.sri }}" crossorigin="anonymous"></script>
{{ end }}

{{ if in .Params.Libraries "viz" }}
  <script defer src="{{ $js.viz.url }}" crossorigin="anonymous"></script>
  <script defer src="{{ $js.viz_render.url }}" integrity="{{ $js.viz_render.sri }}" crossorigin="anonymous"></script>
{{ end }}


<script>
  window.onload = function() {
    (function () {
      document.querySelectorAll('.single__contents > pre > code')
        .forEach((element) => {
          if (!$(element).attr('data-lang')) {
            $(element).parent().wrap('<div data-lang="Code" class="language-code"></div>');
          }
        });
    })();

    function mapLang(name) {
      return {
        coffeescript: 'CoffeeScript',
        cpp: 'C++',
        cs: 'C#',
        js: 'JavaScript',
        json: 'JSON',
        objectivec: 'Objective-C',
        ts: 'TypeScript',
        typescript: 'TypeScript',
      }[name] || name.toUpperCase();
    }

    // search
    runSearch();

    // counter
    {{ $enableBusuanzi := .Site.Params.enableBusuanzi }}
    {{ $busuanziPagePV := .Site.Params.busuanziPagePV }}
    var enableBusuanzi = JSON.parse({{ $enableBusuanzi | jsonify }});
    var busuanziPagePV = JSON.parse({{ $busuanziPagePV | jsonify }});
    
    if (enableBusuanzi && busuanziPagePV) {      
      $('#busuanzi_value_page_pv').digits();
    }    

    var navbar = $('.navbar');

    // toc
    {{ $enableToc := ($.Param "enableToc") }}
    {{ $toc := ($.Param "toc") }}
    {{ $hideToc := ($.Param "hideToc") }}
    var enableToc = JSON.parse({{ $enableToc | jsonify }});
    var toc = JSON.parse({{ $toc | jsonify }});
    var hideToc = JSON.parse({{ $hideToc | jsonify }});
    
    if (enableToc || toc) {
      $("#toc").toc({ content: ".single__contents", headings: "h1,h2,h3,h4" });
      $('#toc > li').each(function () {
        $(this).find('ul').css('display', 'none');
      });
      $('#toc a').each(function () {
        $(this).click(function () {
          navbar.removeClass('navbar--show');
          navbar.removeClass('navbar--hide');
          navbar.addClass('navbar--hide');

          $(".single__contents :header").each(function () {
            $('.toc a').removeClass('active');
          });
          $(this).addClass('active');

          $('#toc > li').each(function () {
            $(this).find('ul').css('display', 'none');
          });
          $(this).next().css('display', 'block');
          $(this).parents('ul').css('display', 'block');
        });
      });

      // toc visibility
      $("#toggle-toc").change(function () {
        if (this.checked) {
          $('.toc').fadeIn(200);
          $('main').removeClass('main-main').removeClass('main').addClass('main-main');
          $('side').removeClass('main-side');
          $('.toc__flexbox').attr('data-position', 'fixed');
        } else {
          $('.toc').fadeOut(200);
          $('main').removeClass('main-main').removeClass('main').addClass('main');
          $('side').removeClass('main-side');
          $('.toc__flexbox').attr('data-position', 'absolute');
        }
      });
    }    

    // Add link button for every
    var text, clip = new ClipboardJS('.anchor');
    var headers = $('.single__contents :header').not('h6').not('h5');
    headers.append(function (index, html) {
      var element = $(this);
      var url = encodeURI(document.location.origin + document.location.pathname);
      var link = url + "#" + element[0].id;
      return " <span class='anchor hide' data-clipboard-text='" + link + "' style='position: relative;'>" +
        "<span style='font-size: 1rem; position: absolute; right: -2rem; top: 50%; transform: translateY(-50%)'>🔗</span>" +
        "</span>"
        ;
    });
    headers.on('mouseenter', function () {
      $(this).find('.anchor').attr('class', 'anchor');
    });
    headers.on('mouseleave', function () {
      $(this).find('.anchor').attr('class', 'anchor hide');
    });

    $(".anchor").on('mouseleave', function (e) {
      $(this).attr('aria-label', null).removeClass('tooltipped tooltipped-s tooltipped-w');
    });

    clip.on('success', function (e) {
      e.clearSelection();
      $(e.trigger).attr('aria-label', 'Link copied to clipboard!').addClass('tooltipped tooltipped-s');
    });
    
    $('.language-code').each(function (i, node) {
      $(node).append('<span class="copy-to-clipboard" title="Copy to clipboard"/>');
    });

    // clipboard
    var clipInit = false;
    $('pre.chroma code, .language-code code').each(function () {
      var code = $(this),
        text = code.text();

      if (text.length > 30) {
        if (!clipInit) {
          var text, clip = new ClipboardJS('.copy-to-clipboard', {
            text: function (trigger) {
              console.log();
              if ($(trigger).prev().find('code').length > 1) {                
                text = $(trigger).prev().find(`code[class^="language-"]`).text();
              } else {
                text = $(trigger).prev().find('code').text();
              }
               
              return text.replace(/^\$\s/gm, '');
            }
          });

          var inPre;
          clip.on('success', function (e) {
            e.clearSelection();
            inPre = $(e.trigger).parent().prop('tagName') == 'PRE';
            $(e.trigger).attr('aria-label', 'Copied to clipboard!').addClass('tooltipped tooltipped-w');
          });

          clip.on('error', function (e) {
            inPre = $(e.trigger).parent().prop('tagName') == 'PRE';
            $(e.trigger).attr('aria-label', fallbackMessage(e.action)).addClass('tooltipped tooltipped-w');
            $(document).one('copy', function () {
              $(e.trigger).attr('aria-label', 'Copied to clipboard!').addClass('tooltipped tooltipped-w');
            });
          });

          clipInit = true;
        }

        var notAllowedClass = ['language-mermaid', 'language-viz', 'language-wave', 'language-chart', 'language-msc', 'language-flowchart'];
        var isNotAllowedIncluded = false;
        var curClassName = code.attr('class');

        for (let str of notAllowedClass) {
          if (curClassName && curClassName.startsWith(str)) {
            isNotAllowedIncluded = true;
            break;
          } 
        }
        
        if (!isNotAllowedIncluded) {
          if (curClassName) {
            code.closest('div.chroma').append('<span class="copy-to-clipboard" title="Copy to clipboard" />');
          }         
        }        
      }
    });

    // gallery
    {{ $enablePhotoSwipe := ($.Param "enablePhotoSwipe") }}
    var enablePhotoSwipe = JSON.parse({{ $enablePhotoSwipe | jsonify }});
    
    if (enablePhotoSwipe) {
      var pswpElement = $('.pswp')[0];
      var imgElements = $('.single__contents').find('img');
      var items = [];

      imgElements.each(function (i, v) {
        $(this).click(function (e) {
          initGallery(i);
        });
        $(this).css('cursor', 'pointer');
        items.push({
          src: v['src'],
          w: 0,
          h: 0,
          title: filename(v['src']),
        });
      });

      function filename(str) {
        var s = str.replace(/\\/g, '/');
        s = s.substring(s.lastIndexOf('/') + 1);
        return str ? s.replace(/[?#].+$/, '') : s.split('.')[0];
      }

      function initGallery(index) {
        var options = { index: index };
        var gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, options);
        gallery.listen('imageLoadComplete', function (index, item) {
          if (item.h < 1 || item.w < 1) {
            let img = new Image();
            img.onload = () => {
              item.w = img.width;
              item.h = img.height;
              gallery.invalidateCurrItems();
              gallery.updateSize(true);
            }
            img.src = item.src;
          }
        });
        gallery.init();
      }
    }

    // mermaid
    {{ $lib := .Params.libraries }}
    var lib = JSON.parse({{ $lib | jsonify }});

    if (lib && lib.includes('mermaid')) {
      {{ $themeVariant := (index .Site.Params.themeOptions 0) }}
      var themeVariant = localStorage.getItem('theme') || JSON.parse({{ $themeVariant | jsonify }});

      if (themeVariant === "dark" || themeVariant === "hacker") {
        mermaid.initialize({ theme: 'dark' });
      } else {
        mermaid.initialize({ theme: 'default' });
      }
      
      let mermaids = [];
      [].push.apply(mermaids, document.getElementsByClassName('language-mermaid'));
      for (i = 0; i < mermaids.length; i++) {
        $(mermaids[i]).unwrap('pre');
        $(mermaids[i]).replaceWith(function () {
          return $("<div />").append($(this).contents()).addClass('mermaid').css('padding', '34px 4px 6px');
        });
      }
    }

    // katex
    if (lib && lib.includes('katex')) {
      var mathElements = document.getElementsByClassName('math');
      var options = [
        { left: "$$", right: "$$", display: true },
        { left: "\\(", right: "\\)", display: false },
        { left: "\\[", right: "\\]", display: true }
      ];

      renderMathInElement(document.querySelector('.single__contents'), options);
    }

    // flowchart.js
    if (lib && lib.includes('flowchartjs')) {
      {{ $flowchartjs := .Site.Data.flowchartjs }}
      var options = JSON.parse({{ $flowchartjs | jsonify }});

      var flowchartPrefix = "language-flowchart";
      var index = 0;
      Array.prototype.forEach.call(document.querySelectorAll("[class^=" + flowchartPrefix + "]"), function(x){
          x.style.display = 'none'
          x.parentNode.style.backgroundColor = "transparent"
          jsonContent = x.innerText;

          node0 = document.createElement('div');
          node0.id = 'flowchart' + index;
          x.parentNode.insertBefore(node0, x);

          var diagram = flowchart.parse(jsonContent);
          diagram.drawSVG("flowchart"+index, options);

          index +=1;
      });      
    }

    // mathjax
    if (lib && lib.includes('mathjax')) {
      window.MathJax = {
        tex: {
          inlineMath: [['$', '$'], ['\\(', '\\)']],
          displayMath: [['$$', '$$'], ['\\[', '\\]']],
          processEscapes: false,
          packages: { '[+]': ['noerrors'] }
        },
        loader: {
          load: ['[tex]/noerrors']
        },
      };
    }

    // js-sequence-diagram
    if (lib && lib.includes('msc')) {
      {{ $msc := .Site.Data.msc }}
      var options = JSON.parse({{ $msc | jsonify }});    

      var index = 0;
      var chartPrefix = "language-msc";
      Array.prototype.forEach.call(document.querySelectorAll("[class^=" + chartPrefix + "]"), function (x) {
        x.style.display = 'none'
        x.parentNode.style.backgroundColor = "transparent"
        jsonContent = x.innerText;
        node0 = document.createElement('div');
        node0.id = 'msc' + index;
        x.parentNode.insertBefore(node0, x);
        var diagram = Diagram.parse(jsonContent);
        diagram.drawSVG("msc" + index, options);
        index += 1;
      });
    }

    // chart.js
    if (lib && lib.includes('chart')) {
      var borderColor = "#666";
      var bgColor = "#ddd";
      var borderWidth = 2;

      Chart.defaults.global.elements.rectangle.borderWidth = borderWidth;
      Chart.defaults.global.elements.rectangle.borderColor = borderColor;
      Chart.defaults.global.elements.rectangle.backgroundColor = bgColor;

      Chart.defaults.global.elements.line.borderWidth = borderWidth;
      Chart.defaults.global.elements.line.borderColor = borderColor;
      Chart.defaults.global.elements.line.backgroundColor = bgColor;

      Chart.defaults.global.elements.point.borderWidth = borderWidth;
      Chart.defaults.global.elements.point.borderColor = borderColor;
      Chart.defaults.global.elements.point.backgroundColor = bgColor;

      var chartPrefix = "language-chart";
      var index = 0;
      Array.prototype.forEach.call(document.querySelectorAll("[class^=" + chartPrefix + "]"), function (x) {
        x.style.display = 'none'
        x.parentNode.style.backgroundColor = "transparent"
        jsonContent = x.innerText;
        node0 = document.createElement('canvas');
        node0.height = 200;
        node0.style.height = 200;
        node0.id = 'myChart' + index;
        source = JSON.parse(jsonContent);
        x.parentNode.insertBefore(node0, x);
        var ctx = document.getElementById('myChart' + index).getContext('2d');
        var myChart = new Chart(ctx, source);
        index += 1;
      });            
    }

    // wavedrom
    if (lib && lib.includes('wavedrom')) {
      var wavePrefix = "language-wave";
      var index = 0;
      Array.prototype.forEach.call(document.querySelectorAll("[class^=" + wavePrefix + "]"), function (x) {
        x.style.display = 'none'
        x.parentNode.style.backgroundColor = "transparent"
        jsonContent = x.innerText;
        node0 = document.createElement('div');
        node0.id = 'WaveDrom_Display_' + index;
        source = JSON.parse(jsonContent);
        x.parentNode.insertBefore(node0, x);
        WaveDrom.RenderWaveForm(index, source, "WaveDrom_Display_");
        index += 1;
      });
    }

    // viz diagram
    if (lib && lib.includes('viz')) {
      var vizPrefix = "language-viz-";
      Array.prototype.forEach.call(document.querySelectorAll("[class^=" + vizPrefix + "]"), function (x) {
        x.style.display = 'none'
        x.parentNode.style.backgroundColor = "transparent"
        var engine;
        x.getAttribute("class").split(" ").forEach(function (cls) {
          if (cls.startsWith(vizPrefix)) {
            engine = cls.substr(vizPrefix.length);
          }
        });
        var viz = new Viz();
        viz.renderSVGElement(x.innerText, { engine: engine })
          .then(function (element) {
            element.style.width = "100%";
            x.parentNode.insertBefore(element, x);
          })
      });
    }
  }
</script>